[Elecraft] K3 Display Won't Shut Off

[Bob McGraw]

One should / must turn the radio off using the POWER button on the radio 
BEFORE shutting off the power supply.  Otherwise said, never turn off 
the power supply with the radio on.   Why?   There is a PDI {Power Down 
Immanent} circuit that saves the current data configuration in the power 
down process.   If the power supply is shut off first, the PDI event 
won't happen.

I know it's your radio, use it as you choose, but don't be surprised 
when things come up whacky.

73

Bob, K4TAX